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Publication number
EP2093993B1
EP2093993B1 EP09152886.9A EP09152886A EP2093993B1 EP 2093993 B1 EP2093993 B1 EP 2093993B1 EP 09152886 A EP09152886 A EP 09152886A EP 2093993 B1 EP2093993 B1 EP 2093993B1
Authority
EP
European Patent Office
Prior art keywords
scanner
mirrors
mirror
imaging
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09152886.9A
Other languages
German (de)
English (en)
Other versions
EP2093993A1 (fr
Inventor
Michael John Wilsher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP2093993A1 publication Critical patent/EP2093993A1/fr
Application granted granted Critical
Publication of EP2093993B1 publication Critical patent/EP2093993B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/60—Apparatus which relate to the handling of originals
    • G03G15/605—Holders for originals or exposure platens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/02418—Details of scanning heads ; Means for illuminating the original for picture information pick up and reproduction
    • H04N1/02427—Details of scanning heads ; Means for illuminating the original for picture information pick up and reproduction in different planes
    • H04N1/02436—Details of scanning heads ; Means for illuminating the original for picture information pick up and reproduction in different planes using a single head selectively and alternately arranged to scan in the different planes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02452—Arrangements for mounting or supporting elements within a scanning head
    • H04N2201/02454—Element mounted or supported
    • H04N2201/0246—Mirror, reflecting element or beam splitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
    • H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
    • H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
    • H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
    • H04N2201/03108—Components of integral heads
    • H04N2201/03137—Reflecting element downstream of the scanned picture elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0422—Media holders, covers, supports, backgrounds; Arrangements to facilitate placing of the medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0434—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207 specially adapted for scanning pages of a book
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0456—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207 for maintaining a predetermined distance between the scanning elements and the picture-bearing surface

Definitions

  • the present disclosure relates to a scanner for scanning an article, such as a book, supported on a platen.
  • the scanner is used in an image processing apparatus, for example, such as a scanner, a copying machine, a facsimile, or a multi-function device.
  • a scanner 100 such as a CCD scanner as shown in FIG. 1 , typically includes a lamp 107 and a reflector 108, a full rate carriage 103, and a half rate carriage 104 with mirrors that reflect via a lens 105 onto a sensor 106.
  • the full rate carriage 103 and the half rate carriage 104 are moved along a document to pick up the image information from the document.
  • Light from the illuminator 107 is focused onto an imaging point 112 on a platen 102 and reflected off an article positioned on the platen 102 onto the sensor 106 via the imaging mirrors 109-111.
  • the scanner 100 generally has an imaging limit as shown by plane A-A in FIG.
  • the imaging limit A-A is formed because it is difficult to arrange the full rate carriage 103 and the half rate carriage 104 such that the extreme left edge area of the original is properly seen and imaged onto the photosensitive surface.
  • Special book scanners are designed for scanning books, an example of which is shown at 200.
  • book scanners 200 are generally derived from the scanner 100 by raising the platen 202 and providing sloped part 251 so that the book can be opened with the page being scanned relatively flat on the platen 202. This configuration provides for better imaging of the page area proximate the book spine.
  • the platen 202 is raised, as shown in FIG. 2 , two optical changes are made to direct the light beams emitted by a lamp 207 to a new imaging point 212 on the raised platen 202.
  • the first optical change is changing the focal position by modifying a sensor 206, a lens 205 and mirrors 209-211 configuration.
  • the lamp 207, the reflector 208 and the mirror 209 are configured to move together on a full rate carriage 215.
  • the mirrors 210 and 211 of the book copier 200 are provided on a half rate carriage 213, similarly to the scanner of FIG. 1 .
  • the second optical change is raising the illumination components up to the new height of the platen. Typically these optical changes are done by moving the lamp 207 and an associated reflector 208 in upward direction closer to the raised platen 202.
  • the book copier 200 needs additional hardware in order to raise the lamp 207 and the associated reflector 208 closer to the raised platen 202.
  • EP-A-1059801 illustrates a digital document scanner having a platen on which a document to be scanned is located in use, and beneath the platen a light source for illuminating the document and a photoelectric sensing system for detecting light reflected from the document.
  • US-A-5526098 describes a copier machine having a main reflector which houses a copy lamp which generates an illuminating light beam which illuminates the underside of the document placed upon a platen, the reflective light being received by a mirror which reflects the copied image onto a sensor.
  • US 1511289 discloses a scanner using a reflector to reflect the light from a pair of mirrors placed above the illumination.
  • a scanner comprises:
  • the current disclosure provides a scanner with a simple design that enables easy adaptation or modification of the existing image processing apparatus, without the need for repositioning the lamp and the reflector assembly.
  • FIG. 3 shows an exemplary embodiment of a scanner 10 that includes a platen 12, one or more illuminators 131, a carriage mechanism 13, one or more mirrors 15, and one or more sensors 17.
  • the scanner 10 is used in any image reading apparatus of an image processing apparatus, for example, such a copying machine, a facsimile, or a multi-function device.
  • the scanner 10 includes a housing 11, which encloses the one or more illuminators 131, a reflector 132, the one or more sensors 17, one or more imaging mirrors 133, 141 and 142, and one or more lenses 16.
  • the platen 12 is positioned in a first plane (marked B-B) and is configured to support an article to be scanned.
  • the platen 12 is formed of a transparent glass.
  • the article to be scanned, which is mounted on the platen 12 may include a sheet-type document or a book.
  • the illuminator 131 is positioned below the platen 12 along a second plane (marked C-C) parallel to the first plane. There may be a single illuminator 131 or multiple illuminators 131, and each is configured to emit light beams. In one embodiment, a fluorescent lamp with a longitudinal direction in a fast-scanning direction (a direction orthogonal to drawing sheet) is used as the illuminator 131. In another embodiment, the illuminator(s) 131 may be a linear LED array, a lamp with a reflector, or a collimated light source.
  • the mirrors 15 are positioned between the platen 12 and the illuminator 131 in the area between the first and second planes B-B and C-C. There may be just one mirror 15 or more than one, and the illustrated embodiment has two.
  • the mirrors 15 are configured to direct the light beams, emitted by the illuminator 131, onto the imaging point 134 on the raised platen 12.
  • the mirrors 15 are configured to direct the light beams, including those received directly from the illuminator 131 and those, reflected off the reflector 132, onto the imaging point 134 on the platen 12.
  • the mirrors 15 may include a pair of curved (or parabolic) mirrors to direct the illumination to the higher platen imaging position.
  • a pair of plane mirrors may be used in place of the pair of curved mirrors to direct the illumination to the higher platen imaging position.
  • the curved mirrors further concentrate the light beams at the imaging point 134 on the platen 12, but depending on the amount of the light required the plane mirrors may be in sufficient to direct the illumination to the higher platen imaging position.
  • the mirrors 15 are configured to be attached to the carriage mechanism 13 and to travel along with the carriage mechanism 13. In one embodiment, the mirrors 15 are fixed to the carriage mechanism 13 and move along with the carriage mechanism 13 as a single element. In one embodiment, the mirrors 15 are attached to the carriage mechanism 13 using screws. It should be appreciated, however, that this embodiment is but one example of different attaching means that can be provided. The exact positioning, size and angle of the one or more mirrors 15 is dependent on the individual imaging geometry.
  • the carriage mechanism 13 is constructed to affect relative movement parallel to the first and the second planes between the platen 12, and the illuminator 131 and the mirrors 15.
  • the carriage mechanism 13 is a full rate carriage that travels entire length of the platen 12.
  • the reflector 132 is spaced from the one or more illuminators 131 along the second plane.
  • the reflector 132 is configured to reflect a portion of the light emitted from the one or more illuminators 131.
  • the one or more mirrors 15 includes a pair of mirrors, one of the pair 15A being configured to receive light directly from the one or more illuminators 131 and the other of the pair 15B being configured to receive light from the one or more illuminators 131 reflected off the reflector 132.
  • the first imaging mirror 133 is configured to be positioned at an angle of 45 0 with respect to the first plane or the second plane.
  • the first imaging mirror 133 is configured to change an optical path of the light reflecting off the article at an imaging point 134 in a direction parallel to the first plane or in a direction parallel to the second plane.
  • the one or more sensor(s) 17 may be a solid-state image sensor, a CMOS sensor or a CCD sensor.
  • one line sensor is formed on a semiconductor board (not shown). If the image reading apparatus supports color images, three line sensors corresponding to the three colors, R (red), G (green), and B (blue) are formed on the semiconductor board at prescribed intervals so that the three light components can be detected. If the image reading apparatus supports monochrome and color images, one line sensor for monochrome images and three line sensors for the R, G, and B colors are formed on the semiconductor board at prescribed intervals.
  • the scanner 10 includes the second carriage mechanism 14.
  • the second carriage mechanism 14 includes second and third imaging mirrors 141 and 142 disposed to form a substantially right angle.
  • the second carriage mechanism 14 is a half rate carriage mechanism that is configured to travel half of the length of the platen 12.
  • the second and the third imaging mirrors 141 and 142 successively changes optical paths of the light reflecting off the first imaging mirror 133 by 90 degrees at a time.
  • the second imaging mirror 141 is configured to change the optical path of the light reflecting off the first imaging mirror 133 in a direction perpendicular to the first plane or the second plane.
  • the third imaging mirror 142 is configured to change the optical path of the light reflecting off the second imaging mirror 141 in a direction parallel to the first plane or the second plane.
  • the carriage mechanism 13 and the second carriage mechanism 14, driven by e.g., a stepping motor (not shown in the drawing), either directly or via a wire/pulley or gear system, are configured to reciprocally travel in a slow-scanning direction, as indicated by the arrow X, and a direction opposite to it in conjunction with each other.
  • the carriage mechanism 13 and the second carriage mechanism 14 are configured to move in a direction substantially parallel to the first plane and the second plane.
  • the optical path length from the imaging point 134 located on the platen 12 to the sensor 17 is preferably kept at a constant length even though the carriage mechanism 13 and the second carriage mechanism 14 moves.
  • the carriage mechanism 13 is configured to travel the entire length of the platen 12, while the second carriage mechanism 14 is configured to travel half of the length of the platen 12. Therefore, the second carriage mechanism or the half rate carriage 14 is generally moveable by half of the moving distance of the carriage mechanism or the full rate carriage 13. Other types of carriage mechanisms may be used.
  • the scanner 10 may include a read signal processing section (not shown) including a drive control section such as a driver for driving the sensor(s) 17.
  • a drive control section such as a driver for driving the sensor(s) 17.
  • the image processing section may be configured to take in account any angular dependence of the illuminator(s) and the sensor(s).
  • the document or the book When reading an image of a document or a book, the document or the book is mounted on the platen 12 manually and fixed in an arbitrary position on the platen 12 so that the carriage mechanism 13, the one or more mirrors 15 and the second carriage mechanism 14 is moved for scanning at a constant speed to read the document image.
  • the light beams from the illuminator(s) 131 are directed via the one or more mirrors 15, and are applied on the document surface through the platen 12.
  • the light beams reflected from the imaging point 134 on the platen 12 is gathered on the imaging face of the sensor(s) 17 by the one or more lenses 16 after passing through the carriage mechanism 13 and the second carriage mechanism 14.
  • the one or more sensor 17 perform photoelectric conversion for the incident light on a pixel basis to read the document image by a prescribed resolution determined by the number of pixels and outputs an analog image signal. If the image reading apparatus supports color images, analog image signals of the R, G, and B color components are outputted from the sensor(s) 17.
  • the present disclosure uses the same imaging components as the prior art system of FIG. 1 , supplemented with an add-on optical assembly that allows the raised platen to be used.
  • the add-on assembly includes the pair of mirrors 15 that direct the illumination from the normal platen position to a raised platen position. Therefore, the present disclosure provides the scanner 10 with simple design that enables easy adaptation or modification of the existing image processing apparatus (for example, such as a scanner, a copying machine, a facsimile, or a multi-function device) for use with a raised platen as a book scanner. Additionally, from a manufacturing and assembly standpoint, the systems of FIGS. 1 and 3 have more common components and require less adaptation, thus allowing for increased overall efficiency.
  • the dual mirror illumination scanner of the present disclosure provides other added advantages such as an improved length of travel, an improved depth of illumination and a reduction in the stray light due to spurious varying reflections.
  • the dual mirror illumination scanner 10 further concentrates the illumination in the imaging plane using one or mirrors 15 and thus, provides an improvement in depth of illumination in comparison with the raised lamp and reflector assembly shown in FIG. 2 .
  • the dual mirror illumination scanner 10 also shields the part of the page or book not being imaged from stray light. Specifically, the pair of mirrors 15 act as an optical shield to reduce the extraneous light from the illuminating system getting to areas of the image which are not being actively scanned. Therefore, the imaging system of the dual mirror illumination system is less affected by any spurious varying reflections from the un-imaged document further improving image fidelity. The quality of the image is measured using a noise-to-signal ratio.
  • FIG. 4 shows a graph that illustrates the use of curved mirrors to concentrate the light beams at an imaging point 134 on the platen 12.
  • Graph illustrates the distance in 1/10 th of millimeter on a horizontal x-axis. On a vertical y-axis, the graph illustrates the distance in 1/10 th of millimeter.
  • the one or more mirrors 15 includes a primary mirror 15A and a secondary mirror 15B.
  • the primary mirror 15A is configured to accept the light beams emitted by the illuminator 131, while the secondary mirror 15B is configured to accept the reflected light beams from the reflector 132.
  • the primary mirror 15A and the secondary mirror 15B are curved mirrors.
  • Both mirrors 15A and 15B are configured to concentrate the light beams to the new imaging point 134.
  • An imaging point 135 shown in the graph is an old imaging point i.e., the imaging point when the platen 12 is not in a raised configuration. The exact positioning, size and angle of the mirrors is dependent on the individual imaging geometry. This configuration is shown in the diagram below ( FIG. 4 ).
  • FIG. 5 shows a graph with illumination profiles measured from a scanner 100 (as shown in FIG. 1 ), a raised platen scanner, a repositioned lamp and mirror assembly scanner 200 (as shown in FIG. 2 ) and the dual mirror illumination scanner 10 (as shown in FIG. 3 ).
  • Graph illustrates the pixel position on a horizontal x-axis. On a vertical y-axis, the graph illustrates the digitized illumination level in ten bit gray level.
  • the illumination level in the raised plate position falls significantly from the illumination level at the normal platen position. If the lamp and mirror assembly is raised along with the platen then the illumination level substantially returns to the illumination level at the normal platen position.
  • the dual mirror illumination system with one or mirrors 15 is used in the scanner 10, then the illumination level substantially returns to the illumination level at the normal platen position. (Note: The slight increased roll off at the edges with the dual mirror illumination scanner 10 is due to the fact that length of the mirrors 15 used to plot this graph was slightly shorter than required, but nevertheless this graph illustrates the enhanced performance). Therefore, from this graph, it can be clearly seen that the dual mirror illumination scanner 10 with the add-on mirrors 15 restores the illumination level to near the normal value.
  • the dual mirror illumination system used in the scanner 10 is shown in FIG. 6 .
  • the pair of mirrors 15 include the primary mirror 15A and the secondary mirror 15B.
  • the mirror assembly 15 can be attached to the scanner 10 by attaching the mirror assembly 15 on top of the carriage mechanism 13 by using any attachment mechanism, such as bolting, welding, or any other mechanical fastening, as would be appreciated by one skilled in the art.
  • FIG. 7 shows an exploded view of the pair of mirrors 15 used in the scanner 10.
  • the mirrors 15A and 15B are connected to each other by a connecting member 50.
  • the mirrors 15A, 15B and the connecting member 50 are integrally formed.
  • the connecting member 50 and the mirrors 15A and 15B are attached using any attachment mechanism, such as welding, adhesives or mechanical fasteners, as would be appreciated by one skilled in the art.
  • the mirrors 15A and 15B are curved mirrors.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimiles In General (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Claims (9)

  1. Scanner comprenant :
    une platine (12) positionnée le long d'un premier plan (B-B) et configurée pour supporter un article à scanner ;
    un ou plusieurs éclairages (131) positionnés au-dessous de la platine (12) le long d'un second plan (C-C) parallèle au premier plan (B-B), les un ou plusieurs éclairages étant configurés pour émettre des faisceaux lumineux ;
    un ou plusieurs capteurs (17) configurés pour détecter la lumière se reflétant sur l'article au niveau d'un point d'imagerie (134) le long d'une trajectoire optique de capteur ; et
    un mécanisme de chariot (13), caractérisé en ce que le scanner comprend en outre un ou plusieurs miroirs (15) positionnés entre la platine (12) et les un ou plusieurs éclairages (131) et entre les premier et second plans (B-B, C-C), chacun des miroirs étant configuré pour diriger un faisceau lumineux émis par les éclairages sur l'article sur la platine au niveau d'un point d'imagerie ; et en ce que les un ou plusieurs éclairages (131) et les un ou plusieurs miroirs (15) sont fixes les uns par rapport aux autres et montés sur le mécanisme de chariot (13), et dans lequel le mécanisme de chariot est construit pour effectuer un mouvement relatif parallèle aux premier et second plans entre :
    (i) la platine (12), et
    (ii) les un ou plusieurs éclairages (131) et les un ou plusieurs miroirs (15) dans une direction de balayage,
    caractérisé en ce que :
    le scanner comprend en outre un réflecteur (132) espacé des un ou plusieurs éclairages (131) le long du second plan (C-C) et configuré pour refléter une partie des faisceaux lumineux émis à partir des un ou plusieurs éclairages (131), dans lequel les un ou plusieurs miroirs (15) comprennent une paire de miroirs, un miroir (15A) de la paire étant configuré pour recevoir la lumière directement des un ou plusieurs éclairages, et l'autre miroir (15B) de la paire étant configuré pour recevoir la lumière des un ou plusieurs éclairages reflétée par le réflecteur.
  2. Scanner selon la revendication 1, comprenant en outre une ou plusieurs lentilles (16) placées dans la trajectoire optique de capteur pour diriger la lumière se reflétant sur l'article au niveau du point d'imagerie vers le capteur.
  3. Scanner selon l'une quelconque des revendications précédentes, comprenant en outre un premier miroir d'imagerie (133), un deuxième miroir d'imagerie (141) et un troisième miroir d'imagerie (142) configurés pour modifier la trajectoire optique de la lumière se reflétant sur l'article au niveau du point d'imagerie, dans lequel le premier miroir d'imagerie est configuré pour modifier la trajectoire optique de la lumière se reflétant sur l'article au niveau du point d'imagerie dans une direction parallèle au premier plan ou au second plan.
  4. Scanner selon la revendication 3, dans lequel le deuxième (141) et le troisième (142) miroir d'imagerie forment un angle droit entre eux, de sorte que le deuxième miroir d'imagerie est configuré pour modifier la trajectoire optique de la lumière se reflétant sur le premier miroir d'imagerie dans une direction perpendiculaire au premier plan ou au second plan et le troisième miroir d'imagerie est configuré pour modifier la trajectoire optique de la lumière reflétant le deuxième miroir d'imagerie dans une direction parallèle au premier plan ou au second plan.
  5. Scanner selon la revendication 3 ou la revendication 4, dans lequel le premier miroir d'imagerie (133), le réflecteur (132), et les un ou plusieurs miroirs (15) sont configurés pour être montés sur le mécanisme de chariot (13).
  6. Scanner selon la revendication 3 ou la revendication 4, dans lequel le deuxième miroir d'imagerie (141) et le troisième miroir d'imagerie (142) sont montés sur un second mécanisme de chariot (14), dans lequel le second mécanisme de chariot est configuré pour se déplacer sur la moitié de la distance parcourue par le mécanisme de chariot.
  7. Scanner selon l'une quelconque des revendications précédentes, dans lequel le capteur (17) comprend au moins un élément du groupe comprenant : un capteur CMOS et un capteur CCD.
  8. Scanner selon l'une quelconque des revendications précédentes, dans lequel le miroir (15) comprend au moins un élément du groupe comprenant : un miroir incurvé, et un miroir plan.
  9. Scanner selon l'une quelconque des revendications précédentes, dans lequel l'éclairage (131) comprend au moins un élément du groupe comprenant : un réseau de diodes électroluminescentes linéaires, une lampe, une lampe avec un réflecteur et une source de lumière collimatée.
EP09152886.9A 2008-02-20 2009-02-16 Scanner Active EP2093993B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/034,017 US8253993B2 (en) 2008-02-20 2008-02-20 Dual mirror illumination system for book copier

Publications (2)

Publication Number Publication Date
EP2093993A1 EP2093993A1 (fr) 2009-08-26
EP2093993B1 true EP2093993B1 (fr) 2017-08-16

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EP09152886.9A Active EP2093993B1 (fr) 2008-02-20 2009-02-16 Scanner

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US (1) US8253993B2 (fr)
EP (1) EP2093993B1 (fr)
JP (1) JP5118083B2 (fr)

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US20200076980A1 (en) * 2016-11-02 2020-03-05 Konica Minolta, Inc. Reader and ink-jet recording device

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EP1860864A1 (fr) * 2005-03-18 2007-11-28 Ricoh Company, Ltd. Dispositif et procede d' eclairage, dispositif et procede de lecture d' image, dispositif et procede de formation d' image

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US8253993B2 (en) 2012-08-28
JP5118083B2 (ja) 2013-01-16
US20090207231A1 (en) 2009-08-20
JP2009199081A (ja) 2009-09-03
EP2093993A1 (fr) 2009-08-26

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